[webkit-dev] Proposal for Device-Specific Layout Tests

[Jonathan Bedard]

Ryosuke and I discussed this on Monday, and in passing, Ryosuke mentioned that he personally finds something like this:

	<test-name>.html
	<test-name>-expected.txt
	<test-name>-expected-<device-type>.txt

more clear than the directory method I proposed. After implementing the above approach in the patch uploaded to <https://bugs.webkit.org/show_bug.cgi?id=192162 <https://bugs.webkit.org/show_bug.cgi?id=192162>>, I’m inclined to agree. Ryosuke’s approach achieves everything we need for device-type specific expected results.

This still doesn’t solve disagreements about how to organize test results when a single test is run on multiple device types, but it seems like a step in the right direction.

Jonathan

> On Dec 4, 2018, at 5:41 PM, Alexey Proskuryakov <ap at webkit.org> wrote:
> 
> 
> 
>> 4 дек. 2018 г., в 16:43, Ryosuke Niwa <rniwa at webkit.org <mailto:rniwa at webkit.org>> написал(а):
>> 
>> 
>> On Tue, Dec 4, 2018 at 12:55 PM Jonathan Bedard <jbedard at apple.com <mailto:jbedard at apple.com>> wrote:
>> These directories would be along-side tests.
>> 
>> I don't like that platform-specific results are under LayoutTests/platform and device-specific results are next to the tests. We should stick with either convention, not mix them up.
>> 
>> If we were to match LayoutTests/platforms, we should probably put it under LayoutTests/devices, or alternatively inside each platform's test directory. Alternatively, I'd be fine if we moved platform specific results to those subdirectories. But having both conventions used throughout would be an insane mess.
> 
> I'm not ready to have an opinion about which approach is best, however I wanted to make a general comment about unification.
> 
> I think that the attempt to abstract all sorts of differences behind the "port" and "platform" concepts in webkitpy was short sighted. There are many subtle and not so subtle variations of behaviors (OS, OS family, specific OS version, build style, specific API used from the build when there are multiple options). Trying to represent these by god objects is creating a lot more inconsistency and confusion than necessary.
> 
> One good thing about platform directories is that we can specify inheritance order with these in a way that is somewhat meaningful. If we are to have an inheritance order for device types, then continuing with the approach would make sense. But if the rule is exact match, or best match, then storing them as -expected directories makes good sense to me.
> 
> - Alexey
> 

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